It is somewhat remarkable that in England this phenomenon has thus far[45] had no general historic treatment save at the hands of ecclesiastical writers, who, in most cases, have regarded it solely as a form of more or less perverse hostility to their own creed. The modern scientific study of religions, which has yielded so many instructive surveys, almost of necessity excludes from view the specific play of freethought, which in the religion-making periods is to be traced rather by its religious results than by any record of its expression. All histories of philosophy, indeed, in some degree necessarily recognize it; and such a work as Lange’s History of Materialism may be regarded as part—whether or not sound in its historical treatment—of a complete history of freethought, dealing specially with general philosophic problems. But of freethought as a reasoned revision or rejection of current religious doctrines by more or less practical people, we have no regular history by a professed freethinker, though there are many monographs and surveys of periods.
The latest and freshest sketch of the kind is Professor J. B. Bury’s brief History of Freedom of Thought (1913), notable for the force of its championship of the law of liberty. The useful compilation of the late Mr. Charles Watts, entitled Freethought: Its Rise, Progress, and Triumph (n. d.), deals with freethought in relation only to Christianity. Apart from treatises which broadly sketch the development of knowledge and of opinion, the nearest approaches to a general historic treatment are the Dictionnaire des Athées of Sylvain Maréchal (1800: 3e édit., par J. B. L. Germond, 1853) and the Biographical Dictionary of Freethinkers by the late Joseph Mazzini Wheeler. The quaint work of Maréchal, expanded by his friend Lalande, exhibits much learning, but is made partly fantastic by its sardonic plan of including a number of typical religionists (including Job, John, and Jesus Christ!), some of whose utterances are held to lead logically to atheism. Mr. Wheeler’s book is in every respect the more trustworthy.
In excuse of Maréchal’s method, it may be noted that the prevailing practice of Christian apologists had been to impute atheism to heterodox theistic thinkers of all ages. The Historia universalis Atheismi et Atheorum falso et merito suspectorum of J. F. Reimmann (Hildesiæ, 1725) exhibits this habit both in its criticism and in its practice, as do the Theses de Atheismo et Superstitione of Buddeus (Trajecti ad Rhenum, 1716). These were the standard treatises of their kind for the eighteenth century, and seem to be the earliest systematic treatises in the nature of a history of freethought, excepting a Historia Naturalismi by A. Tribbechov (Jenæ, 1700) and a Historia Atheismi breviter delineata by Jenkinus Thomasius (Altdorf, 1692; Basileæ, 1709; London, 1716). In the same year with Reimmann’s Historia appeared J. A. Fabricius’s Delectus Argumentorum et Syllabus scriptorum qui veritatem religionis Christianæ adversus Atheos, Epicureos, Deistas, seu Naturalistas ... asseruerunt (Hamburghi), in which it is contended (cap. viii) that many philosophers have been falsely described as atheists; but in the Freydenker Lexicon of J. A. Trinius (Leipzig, 1759), planned as a supplement to the work of Fabricius, are included such writers as Sir Thomas Browne and Dryden.
The works of the late Rev. John Owen, Evenings with the Skeptics, Skeptics of the Italian Renaissance, and Skeptics of the French Renaissance, which, though not constituting a literary whole, collectively cover a great deal of historical ground, must be expressly excepted from the above characterization of clerical histories of freethought, in respect of their liberality of view. They deal largely, however, with general or philosophical skepticism, which is a special development of freethought, often by way of reasonings in which many freethinkers do not acquiesce. (All strict skeptics, that is to say—as distinguished from religionists who profess skepticism up to a certain point by way of making a surrender to orthodox dogmatism[46]—are freethinkers; but most freethinkers are not strictly skeptics.) The history of philosophic skepticism, again, is properly and methodically treated in the old work of Carl Friedrich Stäudlin, Geschichte und Geist des Skepticismus (2 Bde., Leipzig, 1794), the historic survey being divided into six periods: 1, Before Pyrrho; 2, from Pyrrho to Sextus; 3, from Sextus to Montaigne; 4, from Montaigne to La Mothe le Vayer; 5, from La Mothe le Vayer to Hume; 6, from Hume to Kant and Platner. The posthumous work of Émile Saisset, Le Scepticisme: Ænésidème—Pascal—Kant (1865), is a fragment of a projected complete history of philosophic skepticism.
Stäudlin’s later work, the Geschichte des Rationalismus und Supernaturalismus (1826), is a shorter but more general history of the strife between general freethought and supernaturalism in the Christian world and era. It deals cursorily with the intellectual attitude of the early Fathers, the early heretics, and the Scholastics; proceeding to a fuller survey of the developments since the Reformation, and covering Unitarianism, Latitudinarianism, English and French Deism, and German Rationalism of different shades down to the date of writing. Stäudlin may be described as a rationalizing supernaturalist.
Like most works on religious and intellectual history written from a religious standpoint, those of Stäudlin treat the phenomena as it were in vacuo, with little regard to the conditioning circumstances, economic and political; critical thought being regarded purely as a force proceeding through its own proclivities. Saisset is at very much the same point of view. Needless to say, valuable work may be done up to a certain point on this method, which is seen in full play in Hegel; and high praise is due to the learned and thoughtful treatise of R. W. Mackay, The Progress of the Intellect as Exemplified in the Religious Development of the Greeks and Hebrews (2 vols. 1850), where it is partially but ably supplemented by the method of inductive science. That method, again, is freshly and forcibly applied to a restricted problem in W. A. Schmidt’s Geschichte der Denk- und Glaubensfreiheit im ersten Jahrhundert der Kaiserherrschaft und des Christenthums (1847).
Later come the Vorgeschichte des Rationalismus (1853–62) and Geschichte des Rationalismus (1865) of the theologian Tholuck. Of these the latter is unfinished, coming down only to the middle of the eighteenth century; while the former does not exactly fulfil its title, being composed of a volume (2 Abth. 1853, 1854) on Das akademische Leben des 17ten Jahrhunderts, and of one on Das kirchliche Leben des 17ten Jahrhunderts (2 Abth. 1861, 1862), both being restricted to German developments. They thus give much matter extraneous to the subject, and are not exhaustive as to rationalism even in Germany. Hagenbach’s Die Kirchengeschichte des 18. und 19. Jahrhunderts (2 Th. 1848, 1849), a series of lectures, translated in English, abridged, under the title German Rationalism in its Rise, Progress, and Decline (1865), conforms fairly to the latter title, save as regards the last clause.
Of much greater scholarly merit is the Geschichte der religiösen Aufklärung im Mittelalter, vom Ende des achten Jahrhunderts bis zum Anfange des vierzehnten, by Hermann Reuter (1875, 1877). This is at once learned, judicious, and impartial. Its definition of “Aufklärung” is substantially in agreement with the working definition of Freethought given above.
Among other surveys of periods of innovating thought, as distinguished from histories of ecclesiastical heresy, or histories of “religious” or theological thought which only incidentally deal with heterodox opinion, should be noted the careful Geschichte des englischen Deismus of G. F. Lechler (1841); the slighter sketch of E. Sayous, Les déistes anglais et le Christianisme (1882); the somewhat diffuse work of Cesare Cantù, Gli eretici d’Italia (3 tom. 1865–67); the very intelligent study of Felice Tocco, L’Eresia nel medio evo (1884); Schmidt’s Histoire des Cathares (2 tom. 1849); Chr. U. Hahn’s learned Geschichte der Ketzer im Mittelalter (3 Bde. 1845–50); and the valuable research of F. T. Perrens, Les Libertins en France au xviie siècle (1896). A similar scholarly research for the eighteenth century in France is still lacking, and the many monographs on the more famous freethinkers leave a good deal of literary history in obscurity. Such a research has been very painstakingly made for England in the late Sir Leslie Stephen’s History of English Thought in the Eighteenth Century (2 vols., 2nd ed., 1881), which, however, ignores scientific thought. One of the best monographs of the kind is La Critique des traditions religieuses chez les Grecs, des origines au temps de Plutarque, by Professor Paul Decharme (1904), a survey at once scholarly and attractive. The brilliant treatise of Mr. F. M. Cornford, From Religion to Philosophy (1912), sketches on more speculative lines the beginnings of Greek rationalism in Ionia. The Geschichte des Monismus im Altertum of Prof. Dr. A. Drews (1913) is a wide survey, of great synthetic value.
Contributions to the general history of freethought, further, have been made in the works of J. W. Draper (A History of the Intellectual Development of Europe, 2 vols, 1861, many reprints; and History of the Conflict between Religion and Science, 1873, many reprints), both full of suggestion and stimulus, but requiring thorough revision as to detail; in the famous Introduction to the History of Civilization in England of H. T. Buckle (2 vols. 1857–61; new ed. in 1 vol. with annotations by the present writer, 1904); in the History of the Rise and Influence of the Spirit of Rationalism in Europe of W. E. H. Lecky (2 vols. 1865; R. P. A. rep. 1910), who was of Buckle’s school, but fell below him in point of coherence; in the comprehensive History of the Warfare of Science with Theology of Professor Andrew D. White (2 vols. 1896—a great expansion of his earlier essay, The Warfare of Science, 2nd ed. 1877); and in the essay of Mr. E. S. P. Haynes, Religious Persecution: A Study in Political Psychology (1904; R. P. A. rep. 1906), as well as in many histories of philosophy and of sciences.